Portable bluetooth speaker system



FIG. 1 is a top, front perspective view of a portable bluetooth speaker system showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a side view thereof, and the opposite side view being a mirror image thereof;

FIG. 7 is a cross-sectional view thereof, taken along line 7-7 in FIG. 4; and,

FIG. 8 is a cross-sectional view thereof, taken along line 8-8 in FIG. 3.

The broken line portions of FIGS. 7 and 8 are included to show unclaimed subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a portable bluetooth speaker system, as shown and described. 